Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript. It is an update to AngularJS with a focus on mobile and typesafety. Major versions include Angular 1.x, 2.x, 4.x and 5.x. Angular uses components, services and modules to build applications with templates and styles. It is compiled to JavaScript using transpilation and supports AOT and JIT compilation. Common tools used with Angular include the Angular CLI, Webpack and Zone.js.